At only 10 years old, Yuzuru Hanyu witnessed his best friend be forced into the trunk of a car. Now an Olympic and world figure skating champion, he attends the 2017 World Figure Skating Championship in Finland. There he is amazed with another crowd favorite and world famous Suzuki Kururi's choreography. It's like nothing he's ever seen before... But that's just it, he has seen it before long ago, she looks like Mairu. His long lost love, his best friend...